org.zodiac.autoconfigure.kubernetes.KubernetesAutoConfiguration Maven / Gradle / Ivy

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Zodiac Autoconfigure
There is a newer version: 1.6.8
package org.zodiac.autoconfigure.kubernetes;

import java.time.Duration;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.zodiac.autoconfigure.kubernetes.condition.ConditionalOnKubernetesEnabled;

@SpringBootConfiguration
@ConditionalOnKubernetesEnabled
@ConditionalOnClass(value = {io.fabric8.kubernetes.client.DefaultKubernetesClient.class, io.fabric8.kubernetes.api.KubernetesResourceMappingProvider.class})
public class KubernetesAutoConfiguration {

    private static final Logger LOG = LoggerFactory.getLogger(KubernetesAutoConfiguration.class);

    @Bean
    @ConditionalOnMissingBean
    @ConfigurationProperties(prefix = org.zodic.kubernetes.base.constants.KubernetesSystemPropertiesConstants.SPRING_KUBERNETES_PREFIX, ignoreInvalidFields = true)
    protected KubernetesClientProperties kubernetesClientProperties() {
        return new KubernetesClientProperties();
    }

    @Bean
    @ConditionalOnMissingBean(value = {io.fabric8.kubernetes.client.Config.class})
    protected io.fabric8.kubernetes.client.Config kubernetesClientConfig(KubernetesClientProperties kubernetesClientProperties) {
        io.fabric8.kubernetes.client.Config base = io.fabric8.kubernetes.client.Config.autoConfigure(null);
        io.fabric8.kubernetes.client.Config properties = new io.fabric8.kubernetes.client.ConfigBuilder(base)
            // Only set values that have been explicitly specified
            .withMasterUrl(or(kubernetesClientProperties.getMasterUrl(), base.getMasterUrl()))
            .withApiVersion(or(kubernetesClientProperties.getApiVersion(), base.getApiVersion()))
            .withNamespace(or(kubernetesClientProperties.getNamespace(), base.getNamespace()))
            .withUsername(or(kubernetesClientProperties.getUsername(), base.getUsername()))
            .withPassword(or(kubernetesClientProperties.getPassword(), base.getPassword()))

            .withCaCertFile(or(kubernetesClientProperties.getCaCertFile(), base.getCaCertFile()))
            .withCaCertData(or(kubernetesClientProperties.getCaCertData(), base.getCaCertData()))

            .withClientKeyFile(or(kubernetesClientProperties.getClientKeyFile(), base.getClientKeyFile()))
            .withClientKeyData(or(kubernetesClientProperties.getClientKeyData(), base.getClientKeyData()))

            .withClientCertFile(or(kubernetesClientProperties.getClientCertFile(), base.getClientCertFile()))
            .withClientCertData(or(kubernetesClientProperties.getClientCertData(), base.getClientCertData()))

            // No magic is done for the configReloadInfo below so we leave them as is.
            .withClientKeyAlgo(or(kubernetesClientProperties.getClientKeyAlgo(), base.getClientKeyAlgo()))
            .withClientKeyPassphrase(
                or(kubernetesClientProperties.getClientKeyPassphrase(), base.getClientKeyPassphrase()))
            .withConnectionTimeout(
                orDurationInt(kubernetesClientProperties.getConnectionTimeout(), base.getConnectionTimeout()))
            .withRequestTimeout(orDurationInt(kubernetesClientProperties.getRequestTimeout(), base.getRequestTimeout()))
            .withRollingTimeout(
                orDurationLong(kubernetesClientProperties.getRollingTimeout(), base.getRollingTimeout()))
            .withTrustCerts(or(kubernetesClientProperties.isTrustCerts(), base.isTrustCerts()))
            .withHttpProxy(or(kubernetesClientProperties.getHttpProxy(), base.getHttpProxy()))
            .withHttpsProxy(or(kubernetesClientProperties.getHttpsProxy(), base.getHttpsProxy()))
            .withProxyUsername(or(kubernetesClientProperties.getProxyUsername(), base.getProxyUsername()))
            .withPassword(or(kubernetesClientProperties.getProxyPassword(), base.getProxyPassword()))
            .withNoProxy(or(kubernetesClientProperties.getNoProxy(), base.getNoProxy())).build();

        if (properties.getNamespace() == null || properties.getNamespace().isEmpty()) {
            LOG.warn("No namespace has been detected. Please specify 'KUBERNETES_NAMESPACE' env var, or use a later kubernetes version (1.3 or later)");
        }
        return properties;
    }

    @Bean
    @ConditionalOnMissingBean
    protected io.fabric8.kubernetes.client.KubernetesClient kubernetesClient(io.fabric8.kubernetes.client.Config config) {
        return new io.fabric8.kubernetes.client.DefaultKubernetesClient(config);
    }

    @Bean
    @ConditionalOnMissingBean
    @ConditionalOnClass(name = {"io.fabric8.kubernetes.api.model.Pod"})
    protected org.zodic.kubernetes.base.support.StandardPodOperations podOperations(io.fabric8.kubernetes.client.KubernetesClient client) {
        return new org.zodic.kubernetes.base.support.StandardPodOperations(client);
    }

    private static  D or(D dis, D dat) {
        if (dis != null) {
            return dis;
        } else {
            return dat;
        }
    }

    private static Integer orDurationInt(Duration dis, Integer dat) {
        if (dis != null) {
            return (int)dis.toMillis();
        } else {
            return dat;
        }
    }

    private static Long orDurationLong(Duration dis, Long dat) {
        if (dis != null) {
            return dis.toMillis();
        } else {
            return dat;
        }
    }
}